Onkyo TX-NR905 instruction manual Bridging Front Speakers B

Connecting Your Speakers—Continued

Bridging Front Speakers B

The ZONE 2 L/R and SURR BACK L/R terminal posts can be used with front speakers and surround back speakers respectively, or bridged together to provide almost double the output power for the front speakers.

•When bridging is used, the AV receiver is able to drive 2 speakers in the main room (2.1 speakers if you’re using a powered subwoofer).

•For bridging, the positive (+) ZONE 2 L/R and SURR BACK L/R terminal posts are used, but the negative

(–) ZONE 2 L/R and SURR BACK L/R terminals are not.

•Once you’ve completed the bridging connections shown below and turned on the AV receiver, you must set the Speaker Type Front B setting to BTL to enable bridging (see page 51).

•When front Speakers B are bridged, front Speakers A must be wired normally.

Notes:

•Use only front speakers with an impedance of 8 ohms or higher for bridging. Failure to do so may seriously damage the AV receiver.

•When using bridging, make sure that your front speak- ers can handle the additional power.

Bridged Speaker Hookup

1	Connect the AV receiver’s ZONE 2 R positive (+)
	terminal to the right speaker’s positive (+) ter-
	minal. And connect the AV receiver’s SURR
	BACK R positive (+) terminal to the right
	speaker’s negative terminal.
2	Connect the AV receiver’s ZONE 2 L positive (+)

terminal to the left speaker’s positive (+) terminal. And connect the AV receiver’s SURR BACK L positive (+) terminal to the left speaker’s negative terminal.

HDMI

ASSIGNABLE

RS232	IN 4	IN 3	IN 2	IN 1	OUT	OUT
					MAIN	SUB

				ANTENNA	ETHERNET
COMPONENT VIDEO ASSIGNABLE			AM		FM75
IN 3	IN 2 IN 1(DVD)	MONITOR
		OUT

	Y
		AUX 1	GAME/TV	CBL/SAT	VCR/DVR	DVD	MONITOR		IR
							OUT	V
									IN
REMOTE	CB/PB	V							ZONE 2
CONTROL									OUT

DIGITAL ASSIGNABLE			12V TRIGGER
			OUT ZONE 2
	COAXIAL
IN 1	(DVD) CR/PR	S
		S	OUT

AC INLET

	IN	IN	OUT	IN	IN	IN	IN	OUT	IN	IN
IN 2	(VCR/DVR)
	L	L
IN 3	(CBL/SAT)
	R	R
	OPTICAL
IN 1	PHONO	CD		TAPE	AUX 1	GAME/TV	CBL/SAT	VCR/DVR		DVD

FRONT CENTER SURR SURR BACK FRONT CENTER SURR SURR BACK ZONE 2 ZONE 3

			L
			R
SUBWOOFER	MULTI CH	SUBWOOFER PRE OUT	PRE OUT

(GAME/TV)

GND	ZONE2 R	SURR BACK R	FRONT R	SURR R	CENTER	SURR L	FRONT L	SURR BACK L	ZONE2 L
	ASSIGNABLE	Bi-AMP						Bi-AMP	ASSIGNABLE

IN 2

(CD)

OUT

FRONT R (BTL)

FRONT L (BTL)

ZONE2 R	SURR BACK R	SURR BACK L	ZONE2 L
ASSIGNABLE	Bi-AMP	Bi-AMP	ASSIGNABLE

Right speaker Left speaker

30